Answer:
32000 years
Step-by-step explanation:
Movement rate range from 50 to 320m per year.
The fastest is 50m/yr
The slowest is 320m/yr
The range of time must be between the time of the slowest to the fastest.
Obviously, the longest time (maximum) taken would be the slowest value
Using the formula of speed
Speed = distance/time
Time = distance/speed
We have to convert distance in km to m since the speed is in meter per year.
Distance = 1600 km = 1,600,000m
Therefore, maximum time is
t = 160000 / 50 = 32000 years.
